38371

Properties

Appears in sequences

• a(n) = floor(binomial(n,6)/6).at n=26A011852
• n is prime and is the concatenation of numbers n_1, n_2, n_3, in that order, with n_1 - n_2 = n_3. (Do not allow leading zeros for nonzero n_i.)at n=37A067861
• Primes p == 3 mod 4 whose index as prime divides their index as a Gaussian prime (in the first quadrant, as defined in A103431, for example).at n=4A190637
• Incrementally largest terms in the continued fraction of the Golomb-Dickman constant.at n=10A225337
• Primes p such that p^2 is the concatenation of two k-digit primes where k is half the length of p^2.at n=24A248046
• Least prime p such that 2p*n+1 = prime(q*n) for some prime q.at n=49A260208
• Diagonal of the rational function 1/(1 - x - y - z - x y + x z - x y z).at n=4A274670
• Numerator of the sum of inverse products of parts in all compositions of n.at n=8A323339
• E.g.f.: Product_{k>=1} (1 + exp(x) * x^k / k!).at n=8A347006
• Discriminants of imaginary quadratic fields with class number 37 (negated).at n=31A351675
• Consecutive states of the linear congruential pseudo-random number generator (257*s + 41) mod 2^16 when started at s=1.at n=18A384961
• Primes p == 3 (mod 4) such that the multiplicative order of 2+-i modulo p in Gaussian integers (A385165) is not divisible by 2 or 3.at n=42A385188
• Prime numbersat n=4050